329401287 has 12 divisors (see below), whose sum is σ = 476545680. Its totient is φ = 219257568.

The previous prime is 329401283. The next prime is 329401291. The reversal of 329401287 is 782104923.

It is an interprime number because it is at equal distance from previous prime (329401283) and next prime (329401291).

It is not a de Polignac number, because 329401287 - 2² = 329401283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329401283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22462 + ... + 34107.

It is an arithmetic number, because the mean of its divisors is an integer number (39712140).

Almost surely, 2^329401287 is an apocalyptic number.

329401287 is a deficient number, since it is larger than the sum of its proper divisors (147144393).

329401287 is a wasteful number, since it uses less digits than its factorization.

329401287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57222 (or 57219 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 329401287 is about 18149.4156104267. The cubic root of 329401287 is about 690.6241548334.

The spelling of 329401287 in words is "three hundred twenty-nine million, four hundred one thousand, two hundred eighty-seven".